B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
303/70
B60T 15/36 (2006.01) B60T 7/20 (2006.01) B60T 8/18 (2006.01) B60T 8/26 (2006.01)
Patent
CA 1158285
8-17CA/CIP BRAKE SYSTEM Abstract A braking system for the tractor unit of a tractor- trailer vehicle in which the ratio of the pressure applied to the front brakes to the pressure applied to the rear brakes changes automatically when a trailer is connected to or dis- connected from the tractor. The brake system includes two dual mode relay valves and feedback conduits which convey feedback pressures between the front and rear dual mode valves and between a trailer brake service conduit and the front valve. The brake system includes brake pressure proportioning apparatus which is operative to reduce brake pressures on the rear tractor brakes, during normal brake applications/ when the tractor is operated bobtail but which can be over- riden by a vehicle operator if conditions warrant. The pres- sure feedback and system hysterresis cooperate to produce balanced braking and the proper sequence of brake application under a variety of vehicle operating conditions.
328162
Ridout & Maybee Llp
White Motor Corporation
LandOfFree
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